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10 Tips for Altering Your Clothes

Episde 212: Allie Upcycles shares her favorite easy alterations you can make to thrifted or ready-to-wear clothes so that everything fits you perfectly!

Posted in: Seamwork Radio Podcast • October 7, 2024 • Episode 212

Altering thrifted or store-bought clothes is easier than you think! Allie from Allie Upcycles, an expert in size-inclusive thrift flips, is here to share her top 10 favorite tips for altering your clothes with ease.

Whether you're adding a zipper, adjusting a hem, or creating a whole new look, these practical tips will help you breathe new life into your wardrobe. Ready to make your clothes work for you?

Meet Allie

Allie's social media brand is dedicated to accessible and size-inclusive thrift flips. She just published her debut book called Not Your Gran's Sewing Book: Easy Alterations for the Perfect Fit at Any Size.

Her book teaches you how to dart and hem anything, turn oversized into just-the-right size, adjust seam allowances if you need more room, and work with buttons and zippers.


Allie has a passion for showing you how to make any clothes you have in your closet fit perfectly. In this podcast episode, she shares her favorite alteration tips for you to try, even if you've never attempted to alter clothing before.

Allie's Top 10 Alteration Tips for Thrifted or Store-Bought Clothes



  • Check the seam allowance: If an item is a little tight, look at the seam allowance. Many garments have extra room in the seams, which you can let out to gain a little extra space—especially useful for shirts or dresses that just need a bit more ease.


  • Add darts for better fit: Darts are a great way to adjust garments that gape in areas like the armpits or waist. Front darts can pull in the waist on dresses or tops, creating a more flattering silhouette.


  • Swap out sleeves: One of Allie's favorite ways to refresh thrifted clothing is to change the sleeves. You can remove the original sleeve, trace it for size, and create new, stylish sleeves with different shapes or fabrics, adding your personal touch to any garment.


  • Use existing garments as patterns: Found something that fits you well but doesn't suit your style? Use it as a pattern! Take apart a thrifted item that fits perfectly and reuse the pieces to create something new with better fabric or design.


  • Add a slit with facing: If necklines feel too high or constricting, snip a slit down the center and finish the edge with facing. This technique adds a clean finish to your alteration and helps the garment sit more comfortably.


  • The belt method for cropping: To avoid an uneven crop (especially with a larger chest), use the belt method. Wear the shirt, place a belt where you want the new hem to fall, and trace along the belt line. This curved line will ensure an even crop that accommodates your body shape.


  • Add a zipper for ease: Struggling to get garments on and off? Adding a side zipper can help clothes fit more comfortably without losing shape. This works especially well for garments that fit tightly in the chest or hips but are hard to slip on.


  • Use a zipper foot for tight spaces: Zipper presser feet aren't just for zippers! Use this handy tool to sew in tight spaces, like around buttons or seams, where a regular presser foot might not fit.


  • Match thread color for a professional finish: Always try to match the thread color to your garment for any visible stitching. This simple tip makes your alterations look cleaner and more professional, minimizing noticeable mistakes.


  • Be realistic with alterations: Don't shy away from making the necessary alterations, even if it means adding more fabric or adjusting for size. Trying to make a garment smaller than it needs to be will only result in disappointment. Make the changes your body needs, and you'll love the result!

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